Abstract：
:Free radical production increases during exercise and oxidative damage occurs in several tissues. We examined the effects of three different exercise tests on the pattern of change of erythrocyte enzyme antioxidant activities. The tests were a short maximal exercise test, a submaximal prolonged exercise test and a cycling stage during competition. The participants were amateur and professional cyclists with different training statuses and different basal erythrocyte antioxidant enzyme activities. The maximal test produced no changes in the erythrocyte antioxidant enzyme activities of amateur sportsmen. The submaximal test, performed at 80% of maximal oxygen uptake, decreased erythrocyte catalase (12%), glutathione peroxidase determined with H2O2 (14%) and glutathione reductase (16%); superoxide dismutase activity increased by about 25%. The cycling stage performed by professional cyclists increased erythrocyte catalase (29%) and glutathione reductase (10%) activities. The in vivo changes in glutathione reductase activity were confirmed by in vitro measurements: hydrogen peroxide decreased and the presence of catalase increased the activity of this enzyme. In conclusion, we suggest that the different erythrocyte antioxidant enzyme responses to diverse exercise tests can be explained by the effects of hydrogen peroxide and the superoxide anion on the antioxidant enzyme activities in erythrocytes.
journal_name
J Sports Scijournal_title
Journal of sports sciencesauthors
Tauler P,Aguiló A,Guix P,Jiménez F,Villa G,Tur JA,Córdova A,Pons Adoi
10.1080/02640410410001716724subject
Has Abstractpub_date
2005-01-01 00:00:00pages
5-13issue
1eissn
0264-0414issn
1466-447Xjournal_volume
23pub_type
杂志文章abstract：:We tested a hypothetical model that examined both the effects of implicit theories of ability on the judgement of cheating acceptability in a physical education context and the mediating role of the achievement goals defined in the social-cognitive model of achievement motivation. Data were collected from 477 middle-s...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2010.484065
更新日期：2010-06-01 00:00:00
abstract：:Front crawl swimmers often restrict the number of breaths they take during a race because of the possible adverse effects of the breathing action on resistance or stroke mechanics. The aim of this study was to determine whether differences exist in the kinematics of the trunk and upper extremity used during preferred-...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/026404199365551
更新日期：1999-09-01 00:00:00
abstract：:This study investigates the effect of running shoes' aging on mechanical and biomechanical parameters as a function of midsole materials (viscous, intermediate, elastic) and ground inclination. To this aim, heel area of the shoe (under calcaneal tuberosity) was first mechanically aged at realistic frequency and impact...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2014.886127
更新日期：2014-01-01 00:00:00
abstract：:The purpose of this paper was to systematically review the literature and examine the research methodological quality, measurement properties and feasibility of the Loughborough Soccer Passing Test (LSPT). Databases were searched up to June 2017. Twenty five studies fulfilled the eligibility criteria. The main methodo...
journal_title：Journal of sports sciences
pub_type： 杂志文章,评审
doi：10.1080/02640414.2017.1409611
更新日期：2018-08-01 00:00:00
abstract：:To determine if a 36-h fast affects the central and peripheral components of VO2 during submaximal exercise and peak oxygen uptake (VO2 peak), 10 physically healthy males exercised first for 10 min at approximately 60% of their VO2 peak and then to fatigue. Their cardiovascular responses were compared with those of 10...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640419508732240
更新日期：1995-08-01 00:00:00
abstract：:Veteran football players above 40 years have rarely been subject to scientific investigations. This is worrisome because their number is considerable and their cardiovascular risk probably increased. Therefore, a cross-sectional study was conducted in 100 football players between 40 and 63 years of age. This included ...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2015.1118525
更新日期：2016-01-01 00:00:00
abstract：:System theory is classically applied to describe and to predict the effects of training load on performance. The classic models are structured by impulse-type transfer functions, nevertheless, most biological adaptations display exponential growth kinetics. The aim of this study was to propose an extension of the mode...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2018.1494909
更新日期：2019-02-01 00:00:00
abstract：:This study aimed to verify the effect of a multicomponent intervention on cardiometabolic risk factors (CMRF), and to determine the prevalence of responders on CMRF among children and adolescents with overweight/obesity. This is a quasi-experimental study, developed with 35 children and adolescents with overweight/obe...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2020.1725384
更新日期：2020-03-01 00:00:00
abstract：:The purpose of the study was to examine the health effects of 8 weeks of recreational badminton in untrained women. Participants were matched for maximal oxygen uptake (V̇O2max) and body fat percentage and assigned to either a badminton (n = 14), running (n = 14) or control group (n = 8). Assessments were conducted pr...
journal_title：Journal of sports sciences
pub_type： 杂志文章,随机对照试验
doi：10.1080/02640414.2016.1210819
更新日期：2017-06-01 00:00:00
abstract：:We investigated changes in cardiorespiratory performance, BMI and leisure-time physical activity among Finnish adolescents from 2003 to 2010. In addition, we compared cardiorespiratory performance levels between normal weight and overweight adolescents, grouped according to their physical activity. Participants were a...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2014.951874
更新日期：2015-01-01 00:00:00
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journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2015.1018930
更新日期：2015-01-01 00:00:00
abstract：:The use of high-resolution physical activity intensity spectra obtained from accelerometry can improve knowledge of associations with health and development beyond the use of traditional summary measures of intensity. The aim of the present study was to compare three different approaches for determining associations f...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2020.1824341
更新日期：2020-09-20 00:00:00
abstract：:The present study aimed to explore the mediating role of social factors on the associations between attachment styles and basic psychological needs satisfaction within two relational contexts. Athletes (N = 215) completed a multi-section questionnaire pertaining to attachment styles, basic needs satisfied within the c...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2012.744078
更新日期：2013-01-01 00:00:00
abstract：:The aim of this study was to integrate both dispositional and situational factors to examine their interactive ability to predict pre-competitive goal states of task and ego involvement in a sample of National junior tennis players. The Task and Ego Orientation in Sport Questionnaire (Chi and Duda, 1995) and a set of ...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640419808559364
更新日期：1998-05-01 00:00:00
abstract：:Two studies investigated the structure of different athlete leadership networks and its relationship to cohesion using social network analysis. In Study 1, we examined the relationship between a general leadership quality network and task and social cohesion as measured by the Group Environment Questionnaire (GEQ). In...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2016.1150601
更新日期：2016-11-01 00:00:00
abstract：:According to Wegner's (1994) theory of ironic processes of mental control, self-instructions not to perform in a certain way, together with mental loads, can induce thoughts, emotions, and behaviours that are precisely the opposite of intention. Wegner's theory was tested against the implicit overcompensation hypothes...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640410802155138
更新日期：2008-10-01 00:00:00
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journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2013.797098
更新日期：2014-01-01 00:00:00
abstract：:The aim of this study was to evaluate physiological and technical attributes of prepubertal soccer players during multiple small-sided games (SSGs), and determine if SSGs can act as a talent identification tool. Sixteen highly trained U10 soccer players participated and separated into two groups of eight. Each group p...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2016.1149602
更新日期：2016-10-01 00:00:00
abstract：:The inability of the between-bowlers methodology to control parameters external to technique could lead to erroneous significant and non-significant associations being reported between fast-bowling technique and ball release speed. Using Pearson's product - moment correlation, we first examined the effectiveness of a ...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640410601096822
更新日期：2007-09-01 00:00:00
abstract：:Comfort is important for running shoe prescription in athletes to enhance performance and potentially decrease injury risk. A three-stage process was used to develop a new running footwear comfort assessment tool (RUN-CAT): (i) a survey of 282 runners to identify meaningful items of comfort, (ii-a) field testing of 10...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2020.1773613
更新日期：2020-09-01 00:00:00
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journal_title：Journal of sports sciences
pub_type： 杂志文章,随机对照试验
doi：10.1080/02640414.2013.789921
更新日期：2013-01-01 00:00:00
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journal_title：Journal of sports sciences
pub_type： 杂志文章
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更新日期：2020-12-01 00:00:00
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journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2016.1183803
更新日期：2017-04-01 00:00:00
abstract：:The aim of this study was to compare thoracic spine alignment with two- and three-dimensional calculations of shoulder alignment (defined as a line joining the acromion processes of the right and left scapula) when all measures were projected onto the transverse plane. A six-camera Vicon system was used to reconstruct...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640410252925170
更新日期：2002-06-01 00:00:00
abstract：:Coaches are central to talent development in youth soccer and what they say and do impacts on players' achievements and well-being. Researchers have systematically observed coach behaviour and practice activities within this setting (i.e. 'what coaches do'). We review this research in light of contemporary discussion ...
journal_title：Journal of sports sciences
pub_type： 杂志文章,评审
doi：10.1080/02640414.2012.721930
更新日期：2012-01-01 00:00:00
abstract：:While empirical evidence suggests that elite athletes have superior lifespan outcomes relative to the general population, less is known regarding their causes of death. The purpose of this study was to critically examine the mortality outcomes of deceased National Basketball Association and American Basketball Associa...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2017.1409607
更新日期：2018-07-01 00:00:00
abstract：:The current study sought to examine the construct validity of the Resistance Training Skills Battery for Children (RTSBc), a movement screen purported to assess resistance training skill in children. Children aged 7-10 years (n = 27, 21 males, 6 females) undertook measures of resistance training skill via the RTSBc, m...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640414.2018.1428885
更新日期：2018-09-01 00:00:00
abstract：:Nine male triathletes were studied during 160 min of exercise at 65% VO2 max on two occasions to examine the effect of glucose polymer ingestion on energy and fluid balance. During one trial they received 200 ml of a 10% glucose polymer solution at 20 min intervals during exercise (CHO), while in the other they receiv...
journal_title：Journal of sports sciences
pub_type： 临床试验,杂志文章
doi：10.1080/02640418908729817
更新日期：1989-04-01 00:00:00
abstract：:The aim of this study was to compare equivalence and agreement of physical activity output data collected by a Research Tri-axial accelerometer (R3T) during walking and running on a treadmill versus on land. Fifty healthy volunteers, 35 males (age 21.9 +/- 1.8 years) and 15 females (age 21.6 +/- 0.7 years), underwent ...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640410802680580
更新日期：2009-05-01 00:00:00
abstract：:In the present study, we investigated the accuracy of offside judgements of assistant referees in the English Premier League. The moment in the match, the position and movement speed of the assistant referee, attacker and second-last defender, together with the angle of view for the assistant referee were all consider...
journal_title：Journal of sports sciences
pub_type： 杂志文章
doi：10.1080/02640410903518184
更新日期：2010-03-01 00:00:00
